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Öğe Assessment of dentinal tubule penetration of AH plus, MTA Fillapex and Sealapex after various disinfection procedures: A confocal laser scanning microscopic study(AVES, 2023) Zan, Recai; Akpinar, Kerem Engin; Topçuoğlu, Hüseyin Sinan; Hubbezoğlu, Ihsan; Demir, Arzu ŞeymaObjective: The aim of this study is to evaluate and compare dentinal tubule penetration of various root canal sealers obturated after the application of different irrigation activation procedures by a laser scanning confocal microscope. Methods: A total of 150 extracted human permanent mandibular premolar single-rooted teeth were selected and randomly divided into 3 main groups according to the sealer type (n = 50) as AH Plus, MTA Fillapex, and Sealapex. Each main group was randomly subdivided into 5 subgroups according to the irrigation activation protocols (n = 10): Potassium–titanyl–phosphate laser irradiation, conventional needle, intra-kit, sonic irrigation, and ultrasonic irrigation procedures. After the activation procedures, the root canals were obturated with AH Plus, MTA Fillapex, and Sealapex mixed with 0.1% fluorescent rhodamine B isothiocyanate. Specimens were sectioned at 3, 6, and 9 mm from the apex. All sections were examined under a confocal laser scanning microscope to calculate the dentinal tubule penetration area. Results: Data were analyzed using a 3-way analysis of variance and Tukey’s post hoc tests (P =.05). Sealapex indicated a statistically lesser penetration than the other group (P <.05), MTA Fillapex ensured deeper penetration than AH Plus (P <.05). Ultrasonic irrigation provided sig-nificantly deeper penetration than other activation procedures (P <.05). The statistically high-est percentage and the maximum depth of sealer penetration were shown in coronal third for all groups (P <.05). Conclusion: The selection of root canal sealer, irrigation activation procedures, and root canal region plays a crucial role on the dentinal tubule penetration. AH Plus and MTA Fillapex applied with ultrasonic irrigation could achieve deeper sealer penetration in dentinal tubules. © 2023, AVES. All rights reserved.Öğe CONTEMPORARY ENDODONTIC OBTURATION TECHNIQUES: A COMPREHENSIVE LITERATURE REVIEW(Sivas Cumhuriyet University, 2021) Zan, Recai; Demir, Arzu ŞeymaThe success of an endodontic treatment is excessively depends on obturation as well as irrigation. Hence, achiving a homogenious, impermeable and gap-free obturation plays a crucial role in endodontic treatment. Today, many materials and techniques have been developed for endodontic purpose such as those which applied with heat or vibration, those softened with non-toxic chemicals and those uses ultrasound energy. Some of these techniques are still preferred by proffessionals when some are abandoned. However, gutta-percha is the most used material either with or without sealer. Gutta-percha can be applied with cold or warm techniques. It’s known that warm gutta-percha technique leads a more homogenious obturation than cold techniques. Nevertheless, different obturation methods are convenient for different anatomic variations of root canal system. This review article summerize the contemporary and conventional obturation techniques with evaluation of their current status in endodontic implementation.Öğe COVID-19 ETKİSİ ALTINDA DİŞ HEKİMLİĞİ UYGULAMALARI(Erciyes Üniversitesi, 2021) Demir, Arzu Şeyma31 Aralık 2019 da, Çin’in Wuhan kentinde başlayan ve ‘yeni Koronavirüs’ olarak adlandırılan virüs salgını , halihazırda 215 ülke ve bölgeye yayılmıştır ve hızla yayılmaya devam etmektedir. Şu ana kadar 59 milyondan fazla insana COVID-19 teşhisi konulmuş, 1 milyondan fazla kişi COVID-19 nedeniyle hayatını kaybetmiştir. Hayatın her alanında etkisini göstermesinin yanında özellikle sağlık sektörüne önemli ölçüde değişikliğe neden olmuştur. Pandemi boyunca hastanelerde bir dizi önlemler alınmış ve salgının yayılması olabildiğince engellenmeye çalışılmıştır. Özellikle diş hekimliği kliniklerinde acil durumlar belirlenmiş bu durumlar dışında hasta sayısı minimuma indirilmiştir. En yüksek riskli meslek grubunda olan diş hekimlerinin bilgilendirilmesi ve pandemiye uygun prosedürleri eksiksiz yerine getirmesi hastalığının yayılımını yavaşlatmada kilit rol oynamaktadır. Bu nedenle Dünya Sağlık Örgütü başta olmak üzere önde gelen sağlık kuruluşlarının pandemi ile ilgili yayınları diş hekimlerine rehberlik edecek niteliktedir. Bu bilgiler ışığında hem hekimlerin ve diğer sağlık çalışanlarının hem de hastaların yeterli bilgiye ulaşması hedeflenmektedir. Bu derlemede, PubMed, ScienceDirect, World Health Organisation gibi bilimsel siteler ve sayısal verilerin alınması amacıyla Worldometers sitesinden tarama yapılmış ve güncel veriler toparlanarak pandemi süresince diş hekimliği uygulamalarının nasıl yapılması gerektiği ile ilgili literatürdeki bilgiler derlenmiş ve bu dönemde hekimlerin, diğer klinik çalışanlarının ve hastaların enfeksiyondan korunmasının önemi ve diş hekimliğinde acil sayılabilecek durumlar vurgulanmıştır.Öğe The Roughening Effects of Er:YAG, Nd:YAG, and KTP Laser Systems on Root Dentin Surface(Cumhuriyet University Faculty of Dentistry, 2023) Zan, Recai; Topçuoğlu, Hüseyin Sina; Hubbezoğu, İhsan; Altunbaş, Demet; Demir, Arzu ŞeymaObjectives: Present study aimed to evaluate the roughening ability of different laser systems on the middle and apical third of roots. Materials and Methods: Sixty extracted human single-rooted single canal mandibular premolar teeth were randomly assigned to 3 groups (n=20). Standardized preparation and sterilization procedures were performed. The samples were irradiated with Er:YAG, Nd:YAG, and KTP laser systems. The laser irradiations (1.5 Watt) were applied with a spiral motion, starting 1 mm short of the apex and then moving coronally for 10 sec, interleaved with 15-sec recovery intervals for each irradiation. This process was repeated twelve times. The roots that were standardized in the same length and thicknesses were divided parallel to the longitudinal axis. Then, the middle and apical 1/3 surface roughness values of each root section were measured using a profilometer and SEM analysis was performed. The data obtained were analysed using the two-way analysis of variance (ANOVA) and Tukey post-hoc tests. Results: According to measurements obtained from middle and apical 1/3 surfaces; Although, the statistically highest roughness value was determined after Nd:YAG laser (p<0.05), the statistically lowest value was detected following the Er:YAG laser irradiation (p<0.05). Conclusions: In light of the present study, all laser systems caused significant roughness in surfaces. Therefore, laser systems should be carefully applied in human root canals. © 2023.
